diff --git a/includes/data-stores/class-wc-product-data-store-cpt.php b/includes/data-stores/class-wc-product-data-store-cpt.php
index d4a533b6476..46f3f42f5e6 100644
--- a/includes/data-stores/class-wc-product-data-store-cpt.php
+++ b/includes/data-stores/class-wc-product-data-store-cpt.php
@@ -846,12 +846,13 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 	 * Return product ID based on SKU.
 	 *
 	 * @since 3.0.0
-	 * @param string $sku
+	 * @param string $sku Product SKU.
 	 * @return int
 	 */
 	public function get_product_id_by_sku( $sku ) {
 		global $wpdb;
-		return $wpdb->get_var( $wpdb->prepare( "
+
+		$id = $wpdb->get_var( $wpdb->prepare( "
 			SELECT posts.ID
 			FROM $wpdb->posts AS posts
 			LEFT JOIN $wpdb->postmeta AS postmeta ON ( posts.ID = postmeta.post_id )
@@ -861,6 +862,8 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 			AND postmeta.meta_value = '%s'
 			LIMIT 1
 		 ", $sku ) );
+
+		return (int) apply_filters( 'woocommerce_get_product_id_by_sku', $id, $sku );
 	}
 
 	/**
diff --git a/includes/wc-product-functions.php b/includes/wc-product-functions.php
index 8e124b2de33..4c8a7703e93 100644
--- a/includes/wc-product-functions.php
+++ b/includes/wc-product-functions.php
@@ -560,14 +560,12 @@ function wc_product_generate_unique_sku( $product_id, $sku, $index = 0 ) {
  * Get product ID by SKU.
  *
  * @since  2.3.0
- * @param  string $sku
+ * @param  string $sku Product SKU.
  * @return int
  */
 function wc_get_product_id_by_sku( $sku ) {
 	$data_store = WC_Data_Store::load( 'product' );
-	$product_id = $data_store->get_product_id_by_sku( $sku );
-
-	return ( $product_id ) ? intval( $product_id ) : 0;
+	return $data_store->get_product_id_by_sku( $sku );
 }
 
 /**